Rezie Agustina, Regina Andayani, and Dachriyanus. “Development and Validation of Thin-Layer Chromatographic Method for Determination of α-Mangostin in Young Pericarp, Ripe Pericarp and Bark Extract of Garcinia Mangostana L. Using TLC-­Densitometry”. International Journal of Research in Pharmaceutical Sciences, vol. 5, no. 4, Dec. 2014, pp. 295-9, https://ijrps.com/home/article/view/3881.